/*
* Make sure only one copy is running at a time...
*/
static gboolean
TempProcessTrigger(gpointer ginfo)
{
struct tempproc_track* info = ginfo;
int pid;
/* Make sure only one copy is running at a time. */
/* This avoids concurrency problems. */
if (info->isrunning) {
info->runagain = TRUE;
return TRUE;
}
info->isrunning = TRUE;
if (info->prefork) {
if (debug_level > 1) {
cl_log(LOG_DEBUG
, "%s: Calling prefork for temp process %s"
, __FUNCTION__, info->procname);
}
info->prefork(info->userdata);
}
if (ANYDEBUG) {
cl_log(LOG_DEBUG, "Forking temp process %s", info->procname);
}
switch ((pid=fork())) {
int rc;
case -1: cl_perror("%s: Can't fork temporary child"
" process [%s]!", __FUNCTION__
, info->procname);
info->isrunning = FALSE;
break;
case 0: /* Child */
if ((rc=info->fun(info->userdata)) == HA_OK) {
exit(0);
}
cl_log(LOG_WARNING
, "%s: %s returns %d", __FUNCTION__
, info->procname, rc);
exit(1);
break;
default:
/* Fall out */;
}
if (pid > 0) {
NewTrackedProc(pid, 0, (ANYDEBUG? PT_LOGVERBOSE : PT_LOGNORMAL)
, ginfo, &TempProcessTrackOps);
if (info->postfork) {
if (debug_level > 1) {
cl_log(LOG_DEBUG
, "%s: Calling postfork for temp process %s"
, __FUNCTION__, info->procname);
}
info->postfork(info->userdata);
}
}
return TRUE;
}
static int
run_client_as_child(char * execv_argv[])
{
long pid;
int i;
if (execv_argv[0] == NULL) {
cl_log(LOG_ERR, "Null pointer to program name which need to"
"be executed.");
return LSB_EXIT_EINVAL;
}
pid = fork();
if (pid < 0) {
cl_log(LOG_ERR, "cannot start monitor program %s.",
execv_argv[0]);
return -1;
} else if (pid > 0) { /* in the parent process */
NewTrackedProc( pid, 1, PT_LOGVERBOSE
, execv_argv, &MonitoredProcessTrackOps);
monitored_PID = pid;
return pid;
}
/* Now in child process */
execvp(execv_argv[0], execv_argv);
/* if go here, there must be something wrong */
cl_log(LOG_ERR, "%s",strerror(errno));
cl_log(LOG_ERR, "execving monitored program %s failed.", execv_argv[0]);
i = 0;
do {
free(execv_argv[i]);
} while (execv_argv[++i] != NULL);
/* Since parameter error, donnot need to be respawned */
exit(MAGIC_EXIT_CODE);
}